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January 2020
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The Waianakarua River rises in the Horse Range and Kakaunui Mountains in North Otago. The catchment is 262 km2 consisting of extensively grazed grasslands and scrub, native forest, and plantation forestry. Land use in the lower catchment is more intensive, with dairy farms operating near the mouth of the river and on the South Branch upstream of State Highway 1 (SH1).
October 2023
PDF | 274 KB
The purpose of this memo is to provide advice to the Policy Team regarding the practicality, benefits, challenges, and methodology for lake water accounting.
May 2024
PDF | 5 MB
This report provides the physical habitat model details for three habitat models for the Arrow River.
June 2024
PDF | 2 MB
October 2024
PDF | 1 MB
This memo describes the methods used to calculate the days when nine Otago rivers would have had restrictions on the water available for irrigation during the irrigation season based on the new minimum flows proposed for these catchments in the proposed Otago Land and Water Regional Plan.
October 2024
PDF | 4 MB
May 2023
PDF | 1 MB
October 2024
PDF | 921 KB
The purpose of this memo is to assist in the consideration of the current approaches to B-block allocation in catchments with existing supplementary allocation and established flow sites. This memo shows the nature of flow modification in catchments with Schedule 2B supplementary minimum flows and allocation and compares these provisions relative to various flow-sharing ratios.